Fatal error: Uncaught Error: Interface "Workerman\Coroutine\Barrier\BarrierInterface" not found in E:\www\xmvc\v5.0\composer\vendor\workerman\coroutine\src\Barrier\Swoole.php:20 Stack trace: #0 {main} thrown in E:\www\xmvc\v5.0\composer\vendor\workerman\coroutine\src\Barrier\Swoole.php on line 20